Josh,
I know how well meaning your are and passionate about this. I commend you. Let me ask you a few questions that a specific to an answer; not a "theory", a dream, or an evasion. Honest answer, not based on dreaming.
1. First, would you buy any of the examples give (low power, graveyard AM stations)? Why?
2. Do you have a satisfactory business plan in writing that demonstrate your ability to successfully operate a radio station?
3. Have you ever owned or worked for a radio station? Where? Doing what?
4. Have you ever "sold" what makes radio work -- advertising? (Formats are a dime a dozen and not the reason for success.)
5. What kind of research have you done on these stations and what proof do you have of their "potential."
6. What kind of due diligence have you done to see the "proven" track record of these stations?
Now, with the economy as it is, the areas (not markets) you are describing, the facilities these are (that cost money to maintain, pay taxes on, to hire people, to promote, to earn the trust of a community and to convince what advertising "may" or, quite probably, "won't be" available -- how do you think you are set to do this? I'm betting you aren't -- because, low price doesn't mean "good deal" -- and you probably don't have the money to do it. Understandable. Now, if you said, "These facilities will guarantee billing of $250,000 a year, with an operating budget of $175,000 of year and a 36% profit -- you'd do fine.
Anything below that, you're dreaming. And as an owner, how much do you think you're worth, Josh? A thousand a month? (Not enough to live.) $2000 a month? (barely livable.) $3k? $5k? more? How much do YOU want to make? And with all the fees, license, music licensing, equipment costs, etc. -- you just don't "buy" a station. You have to have enough money to "operate" -- and that means even for $75,000 -- that's a bank note, if you can get one, of $2,000 a month over 5 years, (with lots of interest.)
Owners don't "give away" radio stations. That's why they have a low cost. If they were successful and profitable, they would sell for a lot more -- and as many have said here in the past to you, "It's a BUSINESS," and the cheaper they are, the more difficult -- and professional -- that business is.
It's AM, Josh. The future is not good for AM, even in small burgs. There are too many options today.
Just because someone can buy a "dog" doesn't mean it will "bark." Just sayin'.
But first, form a small (very small) group of investors, Josh, and surround yourself with true radio business people -- not fans or wannabees -- who know how to make this kind of transaction work.
Or else, you'll be the next "operator" turning off a radio station and hoping that someone will buy it -- at any price.
This isn't Part 15 radio. This is real business.
Good luck.